/**  
 * Copyright (c) 2009 Carnegie Mellon University. 
 *     All rights reserved.
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing,
 *  software distributed under the License is distributed on an "AS
 *  IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
 *  express or implied.  See the License for the specific language
 *  governing permissions and limitations under the License.
 *
 *
 */


#include <graphlab/factors/discrete_variable.hpp>

std::ostream& operator<<(std::ostream& out, 
                         const graphlab::discrete_variable& var) {
  // return out << "v_" << var.id()
  //            << " in {0:" << var.size()-1 << "}";
  return out << var.id();
}


